City Rail Traffic Driven by Linear Motor
time£º2017/6/24 click£º6560
The linear motor drive method was first proposed by Germany and Japan during the development of conventional and superconducting maglev trains, respectively. The traditional wheel-rail high-speed trains have caused wheel weight reduction due to the influence of high-speed lightweight and high-speed aerodynamics, as well as high-speed. There is a flow of dirt between wheels and rails. The volatilization of high-speed wheel-rail adhesion is affected and the speed of high-speed trains is restricted.
The linear motor straightens the primary expansion of the traditional cylindrical motor, turns the primary closed magnetic field into an open magnetic field, and the stator part of the rotating motor becomes the primary part of the linear motor, and the rotor part of the rotating motor becomes the secondary of the linear motor. If the primary is stationary, the secondary can move straight along the direction of the magnetic field of the traveling wave. The stator and rotor of the linear motor are installed on the guide rail on the vehicle bogie and in the middle of the track, which is the same as the principle of the ordinary rotating induction motor, but its motion mode is changed from rotation to linear motion. The larger feature of this movement is that the driving force is no longer limited by the adhesion of the wheel and rail, but depends on the electromagnetic performance of the stator and rotor system. Therefore, it is a non-sticky driving method that can transmit traction without contact between the vehicle and the guide rail..
In recent years, in addition to the rapid development of high speed and high precision, linear motors have also developed rapidly in terms of large thrust and large capacity. The advantages of urban rail traffic driven by linear motors are mainly reflected in the following points., namely:
1. The same capacity, reduce the height of the car body, reduce the tunnel area, reduce costs, and save land;
2. Strong climbing ability, small turning radius, reduced civil construction, reduced cost, easy to select lines and transfer;
3. Non-contact traction, energy saving, low noise;
4. Train speed, high efficiency;
5. Low maintenance and low operating costs;
6. Compared with traditional subways, except for changes in the bottom of the locomotive, the total construction mode is basically unchanged;
More knowledge of linear motor applications Welcome to Tongmao Linear Motor official website: www.tmemotion Kunshan Tongmao Electronics Co., Ltd. is a set of linear electrical technology research and development, linear motor, sound loop motor, precision linear platform wisdom and sales as one of the manufacturers. The company produces intelligent high quality, high performance linear Motors, coil motors and precision linear platforms using European and American advanced technology standards, technology and testing means, its quality and power performance to an advanced level.
Linear motor